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| Section | Objectives |
|---|---|
| Addressing Risk with Selected Security Counter Measures | - Virtual Private Networks (VPNs) - Patch management - Anti-virus and endpoint protection - Firewalls and network security devices |
| Monitoring and Improving the CSMS | - Incident detection and response - Continuous monitoring of IACS cybersecurity - Security lifecycle management |
| Addressing Risk with Implementation Measures | - Industrial network architecture and segmentation - Zones and conduits model - Defense-in-depth strategy - Access control principles |
| Understanding the Current Industrial Security Environment | - Current state of industrial control systems security - Security challenges in OT environments - Convergence of IT and OT |
| Creating A Security Program | - Security management organization - Defining information security policy - Developing a long-term security program |
| How Cyberattacks Happen | - Case studies of industrial cyber incidents - Vulnerabilities in industrial systems - Cyber threats and attack vectors |
| Validating or Verifying the Security of Systems | - Auditing and compliance - Security validation and verification techniques - Continuous improvement of security measures |
| Addressing Risk with Security Policy, Organization, and Awareness | - Security policies and procedures - Organizational security roles and responsibilities - Security awareness and training |
| Risk Analysis | - Risk management fundamentals - Risk and vulnerability analysis techniques - Cybersecurity risk assessment concepts |
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NEW QUESTION # 78
After receiving an approved patch from the JACS vendor, what is BEST practice for the asset owner to follow?
Answer: A
Explanation:
According to the ISA/IEC 62443 Cybersecurity Fundamentals Specialist resources, patches are software updates that fix bugs, vulnerabilities, or improve performance of a system. Patches are classified into three categories based on their urgency and impact: low, medium, and high. Low priority patches are those that have minimal or no impact on the system functionality or security, and can be applied at the next scheduled maintenance. Medium priority patches are those that have moderate impact on the system functionality or security, and should be applied within a reasonable time frame, such as three months. High priority patches are those that have significant or critical impact on the system functionality or security, and should be applied as soon as possible, preferably at the first unscheduled outage. Applying patches in a timely manner is a best practice for maintaining the security and reliability of an industrial automation and control system (IACS).
References:
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 4.3.2, Patch Management
* ISA/IEC 62443-2-1:2009, Security for industrial automation and control systems - Part 2-1:
Establishing an industrial automation and control systems security program, Clause 5.3.2.2, Patch management
* ISA/IEC 62443-3-3:2013, Security for industrial automation and control systems - Part 3-3: System security requirements and security levels, Clause 4.3.3.6.2, Patch management
NEW QUESTION # 79
Why is OPC Classic considered firewall unfriendly?
Answer: A
Explanation:
OPC Classic uses Microsoft's DCOM (Distributed Component Object Model) for communication, which dynamically opens multiple ports, making it extremely difficult to manage with firewalls.
"OPC Classic is firewall-unfriendly because DCOM requires dynamic port negotiation, making it difficult to define consistent firewall rules."
- ISA/IEC 62443-3-3:2013, Annex A - Communication Protocols and Security Concerns This lack of port predictability presents a significant security and operational risk, which led to the development of OPC UA, which uses fixed ports and supports encryption.
References:
ISA/IEC 62443-3-3 - Annex A
OPC Foundation Security Guidelines
NEW QUESTION # 80
A company is developing an automation solution and wants to align its cybersecurity efforts with ISA/IEC
62443 standards. Which lifecycle phases should be integrated into their project plan to cover both security and automation solution security comprehensively?
Answer: C
Explanation:
ISA/IEC 62443 outlines a comprehensive security lifecycle that spans all phases of an automation system's development and deployment - from concept through decommissioning. This includes:
Specification
Design
Implementation
Integration and commissioning
Operation and maintenance
Decommissioning
"The IACS cybersecurity lifecycle includes all phases - from concept through retirement - to ensure security is addressed continuously and consistently."
- ISA/IEC 62443-1-1:2007, Clause 5 - Lifecycle Model
- ISA/IEC 62443-4-1:2018 - Secure Development Lifecycle (SDL)
Security must be integrated early (during design/specification) and maintained throughout the system's life.
References:
ISA/IEC 62443-1-1 - Clause 5
ISA/IEC 62443-2-1 - Lifecycle security program
ISA/IEC 62443-4-1 - SDL phases
NEW QUESTION # 81
What are the two sublayers of Layer 2?
Available Choices (select all choices that are correct)
Answer: A
NEW QUESTION # 82
After receiving an approved patch from the JACS vendor, what is BEST practice for the asset owner to follow?
Answer: A
Explanation:
According to the ISA/IEC 62443 Cybersecurity Fundamentals Specialist resources, patches are software updates that fix bugs, vulnerabilities, or improve performance of a system. Patches are classified into three categories based on their urgency and impact: low, medium, and high. Low priority patches are those that have minimal or no impact on the system functionality or security, and can be applied at the next scheduled maintenance. Medium priority patches are those that have moderate impact on the system functionality or security, and should be applied within a reasonable time frame, such as three months. High priority patches are those that have significant or critical impact on the system functionality or security, and should be applied as soon as possible, preferably at the first unscheduled outage. Applying patches in a timely manner is a best practice for maintaining the security and reliability of an industrial automation and control system (IACS). References:
ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 4.3.2, Patch Management ISA/IEC 62443-2-1:2009, Security for industrial automation and control systems - Part 2-1: Establishing an industrial automation and control systems security program, Clause 5.3.2.2, Patch management ISA/IEC 62443-3-3:2013, Security for industrial automation and control systems - Part 3-3: System security requirements and security levels, Clause 4.3.3.6.2, Patch management
NEW QUESTION # 83
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